Luis bought a total of 12 lollipops and chocolate bars. Each lollipop cost 40¢. Each chocolate bar cost 80¢. He paid a total of $6.40. How many chocolate bars did he buy?
Number of
lollipops |
Amount paid
for the lollipops |
Number of
chocolate bars |
Amount paid
for the lollipops |
Total paid |
| 12 |
12 x 40
= 480¢ |
0 |
0 |
480¢ |
| 11 |
11 x 40
= 440¢ |
1 |
1 x 80
= 80¢ |
520¢ |
| 8 |
8 x 40
= 320¢ |
4 |
4 x 80
= 320¢ |
640¢ |
$1 = 100¢
$6.40 = 640¢
Amount paid if all were lollipops
= 12 x 40
= 480¢
Big difference between the amount paid for the lollipops and the chocolate bars
= 640 - 480
= 160¢
Small difference between the amount paid for the one lollipop and one chocolate bar
= 80 - 40
= 40¢
Number of chocolate bars
= 160 ÷ 40
= 4
Answer(s): 4
